Unit 1 Review: The Number System

Which expression has the same value as -3 + (-5)?

• -3 − (-5)

• -3 + 5

• -5 + (-3)

• -5 + (-3)

A diver's elevation is -30 feet relative to sea level. She dives down 12 feet. What is her elevation after the dive?

• 12 feet

• 18 feet

• -30 feet

• -42 feet

Which number line models the expression -3 + 5?

• A

• B

• C

• D

The temperature in the morning was -3 degrees Fahrenheit. The temperature dropped 11 degrees by night. What was the temperature at night?

• -14 degrees Fahrenheit

• -8 degrees Fahrenheit

• 8 degrees Fahrenheit

• 14 degrees Fahrenheit

Which of the following expressions has the greatest value?

• 3 − 7 + (−10)

• 3 + 7 − (−10)

• 3 − 7 − (−10)

• 3 + 7 + (−10)

Let j be any non-zero number.

What is the additive inverse of j?

• 1/j

• |j|

• -1/j

• -j

Karla is diving 100 feet below the surface. Karson is parasailing 500 feet above the surface. How far apart are Karla and Karson?

• 600 feet

• 400 feet

• 100 feet

• 500 feet

The football team lost 4 yards on 2 plays in a row. Which of the following could represent the change in field position?

• -12 yards

• -8 yards

• -6 yards

• -2 yards

Which expression results in a negative answer?

• a negative number divided by a negative number

• a positive number divided by a negative number

• a negative number multiplied by a negative number

• a positive number multiplied by a positive number

NO CALCULATOR: Convert the mixed number to a decimal?

• -7.25

• -7.333...

• -7.41666...

• -7.512